Actual source code: google.c
petsc-3.6.4 2016-04-12
2: #include <petscwebclient.h>
3: #pragma clang diagnostic ignored "-Wdeprecated-declarations"
4: #pragma gcc diagnostic ignored "-Wdeprecated-declarations"
6: /*
7: These variables identify the code as a PETSc application to Google.
9: See - http://stackoverflow.com/questions/4616553/using-oauth-in-free-open-source-software
10: Users can get their own application IDs - https://code.google.com/p/google-apps-manager/wiki/GettingAnOAuthConsoleKey
12: */
13: #define PETSC_GOOGLE_CLIENT_ID "521429262559-i19i57eek8tnt9ftpp4p91rcl0bo9ag5.apps.googleusercontent.com"
14: #define PETSC_GOOGLE_CLIENT_ST "vOds_A71I3_S_aHMq_kZAI0t"
19: /*@C
20: PetscGoogleDriveRefresh - Get a new authorization token for accessing Google drive from PETSc from a refresh token
22: Not collective, only the first process in the MPI_Comm does anything
24: Input Parameters:
25: + comm - MPI communicator
26: . refresh token - obtained with PetscGoogleDriveAuthorize(), if NULL PETSc will first look for one in the options data
27: if not found it will call PetscGoogleDriveAuthorize()
28: - tokensize - size of the output string access_token
30: Output Parameter:
31: . access_token - token that can be passed to PetscGoogleDriveUpload()
33: Options Database:
34: . -google_refresh_token XXX where XXX was obtained from PetscGoogleDriveAuthorize()
36: Level: intermediate
38: .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveUpload()
40: @*/
41: PetscErrorCode PetscGoogleDriveRefresh(MPI_Comm comm,const char refresh_token[],char access_token[],size_t tokensize)
42: {
43: SSL_CTX *ctx;
44: SSL *ssl;
45: int sock;
47: char buff[8*1024],body[1024];
48: PetscMPIInt rank;
49: char *refreshtoken = (char*)refresh_token;
50: PetscBool found;
53: MPI_Comm_rank(comm,&rank);
54: if (!rank) {
55: if (!refresh_token) {
56: PetscBool set;
57: PetscMalloc1(512,&refreshtoken);
58: PetscOptionsGetString(NULL,"-google_refresh_token",refreshtoken,512,&set);
59: if (!set) {
60: PetscGoogleDriveAuthorize(comm,access_token,refreshtoken,512*sizeof(char));
61: PetscFree(refreshtoken);
62: return(0);
63: }
64: }
65: PetscSSLInitializeContext(&ctx);
66: PetscHTTPSConnect("accounts.google.com",443,ctx,&sock,&ssl);
67: PetscStrcpy(body,"client_id=");
68: PetscStrcat(body,PETSC_GOOGLE_CLIENT_ID);
69: PetscStrcat(body,"&client_secret=");
70: PetscStrcat(body,PETSC_GOOGLE_CLIENT_ST);
71: PetscStrcat(body,"&refresh_token=");
72: PetscStrcat(body,refreshtoken);
73: if (!refresh_token) {PetscFree(refreshtoken);}
74: PetscStrcat(body,"&grant_type=refresh_token");
76: PetscHTTPSRequest("POST","accounts.google.com/o/oauth2/token",NULL,"application/x-www-form-urlencoded",body,ssl,buff,sizeof(buff));
77: PetscSSLDestroyContext(ctx);
78: close(sock);
80: PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);
81: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return access_token");
82: }
83: return(0);
84: }
86: #include <sys/stat.h>
90: /*@C
91: PetscGoogleDriveUpload - Loads a file to the Google Drive
93: Not collective, only the first process in the MPI_Comm uploads the file
95: Input Parameters:
96: + comm - MPI communicator
97: . access_token - obtained with PetscGoogleDriveRefresh(), pass NULL to have PETSc generate one
98: - filename - file to upload; if you upload multiple times it will have different names each time on Google Drive
100: Options Database:
101: . -google_refresh_token XXX
103: Usage Patterns:
104: With PETSc option -google_refresh_token XXX given
105: PetscGoogleDriveUpload(comm,NULL,filename); will upload file with no user interaction
107: Without PETSc option -google_refresh_token XXX given
108: PetscGoogleDriveUpload(comm,NULL,filename); for first use will prompt user to authorize access to Google Drive with their processor
110: With PETSc option -google_refresh_token XXX given
111: PetscGoogleDriveRefresh(comm,NULL,access_token,sizeof(access_token));
112: PetscGoogleDriveUpload(comm,access_token,filename);
114: With refresh token entered in some way by the user
115: PetscGoogleDriveRefresh(comm,refresh_token,access_token,sizeof(access_token));
116: PetscGoogleDriveUpload(comm,access_token,filename);
118: PetscGoogleDriveAuthorize(comm,access_token,refresh_token,sizeof(access_token));
119: PetscGoogleDriveUpload(comm,access_token,filename);
121: Level: intermediate
123: .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveRefresh()
125: @*/
126: PetscErrorCode PetscGoogleDriveUpload(MPI_Comm comm,const char access_token[],const char filename[])
127: {
128: SSL_CTX *ctx;
129: SSL *ssl;
130: int sock;
132: char head[1024],buff[8*1024],*body,*title;
133: PetscMPIInt rank;
134: struct stat sb;
135: size_t len,blen,rd;
136: FILE *fd;
139: MPI_Comm_rank(comm,&rank);
140: if (!rank) {
141: PetscStrcpy(head,"Authorization: Bearer ");
142: PetscStrcat(head,access_token);
143: PetscStrcat(head,"\r\n");
144: PetscStrcat(head,"uploadType: multipart\r\n");
146: stat(filename,&sb);
147: if (ierr) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to stat file: %s",filename);
148: len = 1024 + sb.st_size;
149: PetscMalloc1(len,&body);
150: PetscStrcpy(body,"--foo_bar_baz\r\n"
151: "Content-Type: application/json\r\n\r\n"
152: "{");
153: PetscPushJSONValue(body,"title",filename,len);
154: PetscStrcat(body,",");
155: PetscPushJSONValue(body,"mimeType","text.html",len);
156: PetscStrcat(body,",");
157: PetscPushJSONValue(body,"description","a file",len);
158: PetscStrcat(body,"}\r\n\r\n"
159: "--foo_bar_baz\r\n"
160: "Content-Type: text/html\r\n\r\n");
161: PetscStrlen(body,&blen);
162: fd = fopen (filename, "r");
163: if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to open file: %s",filename);
164: rd = fread (body+blen, sizeof (unsigned char), sb.st_size, fd);
165: if (rd != (size_t) sb.st_size) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to read entire file: %s %d %d",filename,(int)rd,sb.st_size);
166: fclose(fd);
167: body[blen + rd] = 0;
168: PetscStrcat(body,"\r\n\r\n"
169: "--foo_bar_baz\r\n");
170: PetscSSLInitializeContext(&ctx);
171: PetscHTTPSConnect("www.googleapis.com",443,ctx,&sock,&ssl);
172: PetscHTTPSRequest("POST","www.googleapis.com/upload/drive/v2/files/",head,"multipart/related; boundary=\"foo_bar_baz\"",body,ssl,buff,sizeof(buff));
173: PetscFree(body);
174: PetscSSLDestroyContext(ctx);
175: close(sock);
176: PetscStrstr(buff,"\"title\"",&title);
177: if (!title) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Upload of file %s failed",filename);
178: }
179: return(0);
180: }
182: #if defined(PETSC_HAVE_UNISTD_H)
183: #include <unistd.h>
184: #endif
188: /*@C
189: PetscGoogleDriveAuthorize - Get authorization and refresh token for accessing Google drive from PETSc
191: Not collective, only the first process in MPI_Comm does anything
193: Input Parameters:
194: + comm - the MPI communicator
195: - tokensize - size of the token arrays
197: Output Parameters:
198: + access_token - can be used with PetscGoogleDriveUpload() for this one session
199: - refresh_token - can be used for ever to obtain new access_tokens with PetscGoogleDriveRefresh(), guard this like a password
200: it gives access to your Google Drive
202: Notes: This call requires stdout and stdin access from process 0 on the MPI communicator
204: You can run src/sys/webclient/examples/tutorials/googleobtainrefreshtoken to get a refresh token and then in the future pass it to
205: PETSc programs with -google_refresh_token XXX
207: Level: intermediate
209: .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten()
211: @*/
212: PetscErrorCode PetscGoogleDriveAuthorize(MPI_Comm comm,char access_token[],char refresh_token[],size_t tokensize)
213: {
214: SSL_CTX *ctx;
215: SSL *ssl;
216: int sock;
218: char buff[8*1024],*ptr,body[1024];
219: PetscMPIInt rank;
220: size_t len;
221: PetscBool found;
224: MPI_Comm_rank(comm,&rank);
225: if (!rank) {
226: if (!isatty(fileno(PETSC_STDOUT))) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"Requires users input/output");
227: PetscPrintf(comm,"Cut and paste the following into your browser:\n\n"
228: "https://accounts.google.com/o/oauth2/auth?"
229: "scope=https%%3A%%2F%%2Fwww.googleapis.com%%2Fauth%%2Fdrive.file&"
230: "redirect_uri=urn:ietf:wg:oauth:2.0:oob&"
231: "response_type=code&"
232: "client_id="
233: PETSC_GOOGLE_CLIENT_ID
234: "\n\n");
235: PetscPrintf(comm,"Paste the result here:");
236: ptr = fgets(buff, 1024, stdin);
237: if (!ptr) SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_FILE_READ, "Error reading from stdin: %d", errno);
238: PetscStrlen(buff,&len);
239: buff[len-1] = 0; /* remove carriage return at end of line */
241: PetscSSLInitializeContext(&ctx);
242: PetscHTTPSConnect("accounts.google.com",443,ctx,&sock,&ssl);
243: PetscStrcpy(body,"code=");
244: PetscStrcat(body,buff);
245: PetscStrcat(body,"&client_id=");
246: PetscStrcat(body,PETSC_GOOGLE_CLIENT_ID);
247: PetscStrcat(body,"&client_secret=");
248: PetscStrcat(body,PETSC_GOOGLE_CLIENT_ST);
249: PetscStrcat(body,"&redirect_uri=urn:ietf:wg:oauth:2.0:oob&");
250: PetscStrcat(body,"grant_type=authorization_code");
252: PetscHTTPSRequest("POST","accounts.google.com/o/oauth2/token",NULL,"application/x-www-form-urlencoded",body,ssl,buff,sizeof(buff));
253: PetscSSLDestroyContext(ctx);
254: close(sock);
256: PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);
257: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return access_token");
258: PetscPullJSONValue(buff,"refresh_token",refresh_token,tokensize,&found);
259: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return refresh_token");
261: PetscPrintf(comm,"Here is your Google refresh token, save it in a save place, in the future you can run PETSc\n");
262: PetscPrintf(comm,"programs with the option -google_refresh_token %s\n",refresh_token);
263: PetscPrintf(comm,"to access Google Drive automatically\n");
264: }
265: return(0);
266: }
271: /*@C
272: PetscURLShorten - Uses Google's service to get a short url for a long url
274: Input Parameters:
275: + url - long URL you want shortened
276: - lenshorturl - length of buffer to contain short URL
278: Output Parameter:
279: . shorturl - the shortened URL
281: Level: intermediate
283: .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscGoogleDriveAuthorize()
284: @*/
285: PetscErrorCode PetscURLShorten(const char url[],char shorturl[],size_t lenshorturl)
286: {
287: SSL_CTX *ctx;
288: SSL *ssl;
289: int sock;
291: char buff[1024],body[512];
292: PetscBool found;
295: PetscSSLInitializeContext(&ctx);
296: PetscHTTPSConnect("www.googleapis.com",443,ctx,&sock,&ssl);
297: PetscStrcpy(body,"{");
298: PetscPushJSONValue(body,"longUrl",url,sizeof(body)-2);
299: PetscStrcat(body,"}");
300: PetscHTTPSRequest("POST","www.googleapis.com/urlshortener/v1/url",NULL,"application/json",body,ssl,buff,sizeof(buff));
301: PetscSSLDestroyContext(ctx);
302: close(sock);
304: PetscPullJSONValue(buff,"id",shorturl,lenshorturl,&found);
305: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return short URL");
306: return(0);
307: }